Johnny Siu

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
LED Switch Circuitry for Varying Input Voltage Source
- Patent number 9,320,099
- Issue date Apr 19, 2016
- Huizhou Light Engine Ltd.
- Wa Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
LED switch circuitry for varying input voltage source
- Patent number 9,113,525
- Issue date Aug 18, 2015
- Huizhou Light Engine Ltd.
- Wa-Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
LED switch circuitry for varying input voltage source
- Patent number 8,947,014
- Issue date Feb 3, 2015
- Huizhou Light Engine Ltd.
- Wa-Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
LED switch circuitry for varying input voltage source
- Patent number 8,508,140
- Issue date Aug 13, 2013
- Huizhou Light Engine Ltd.
- Wa-Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
LED SWITCH CIRCUITRY FOR VARYING INPUT VOLTAGE SOURCE
- Publication number 20150156831
- Publication date Jun 4, 2015
- HUIZHOU LIGHT ENGINE LTD.
- Wa-Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
LED Switch Circuitry for Varying Input Voltage Source
- Publication number 20140339984
- Publication date Nov 20, 2014
- HUIZHOU LIGHT ENGINE LTD.
- Wa Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
STABILIZING NETWORK FOR ELECTRONIC TRANSFORMER DRIVEN LED DEVICES
- Publication number 20120056608
- Publication date Mar 8, 2012
- Johnny Siu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
LED SWITCH CIRCUITRY FOR VARYING INPUT VOLTAGE SOURCE
- Publication number 20120038615
- Publication date Feb 16, 2012
- Wa Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
LED SWITCH CIRCUITRY FOR VARYING INPUT VOLTAGE SOURCE
- Publication number 20120038285
- Publication date Feb 16, 2012
- Wa Hing Leung
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR